Honestly, the article title is a bit of clickbait. The main complaint is about people on medical leave being disadvantaged by the token usage as performance metric that was introduced.

That doesn't sound like it? From the article:

>> According to the complaint, Meta used a number of internal AI-assisted systems to score and rank employees on a termination list. Those included "Metamate," a large language model assistant; an employee-trained "second brain" that tracked workers' communications and documents; and a productivity score drawn from scanning keystrokes, screen content, emails and browser history, according to the lawsuit.